On Mon, Feb 18, 2019 at 03:37:48PM +0100, Stanislaw Gruszka wrote: > 0001-mt76x02u-use-usb_bulk_msg-to-upload-firmware.patch > 0002-mt76usb-do-not-use-compound-head-page-for-SG-I-O.patch > > Or problem can be solved by just one of it (either first or second). > > Additionally I'm not 100% sure if > > 0002-mt76usb-do-not-use-compound-head-page-for-SG-I-O.patch > > is correct. So perhaps some IOMMU maintainer could look at it. The patch looks good, but I don't understand why it is needed. The AMD IOMMU driver should handle sg->offset > PAGE_SIZE just fine. Can you verify that this is the problem? I will look into that again if it turns out there is bug in the IOMMU driver. Regards, Joerg
